100 gr Nosler HPBT Custom Competition-has anyone been able to make this bullet shoot?

[Harpoon1]

I swear, I have tried 3 lots now of this bullet, in 3 different Grendel's, and at least 2 if not more 6.5 Creedmoor barrels. I can NOT make this bullet shoot, no matter what I do. Everything from minimum load, to maximum load, with a spectrum of slow and fast powders. And it will not group. I want to love this bullet, as it is very cost effective, and has a great BC. Has anyone else found the homerun load with these things?

I bought like literally 5-6,000 of them right off the bat when I got into the Grendel. They were dirt cheap and I figured I could make them fly and group out of something. So far I’ve been wrong! Have had a similar problem with the Nosler 100 Partitions too. Bummer.